Effect of Surface Treatment by O 3 and Chemical Activation by Alkali Metal on the Performance of ACFs on Adsorption and Desorption of BTX Gases

Jung Hee Jang and Gi Bo Han
Additional contact information
Jung Hee Jang: Department of Applied Environmental Science, Graduate School, Kyung Hee University, Yongin-si, Gyeonggi-do 17104, Korea
Gi Bo Han: Plant Engineering Center, Institute for Advanced Engineering, 633-2 Goan-ri, Baegam-myon, Cheoin-gu, Yongin-si, Gyeonggi-do 17528, Korea

IJERPH, 2020, vol. 17, issue 15, 1-12

Abstract: In order to investigate the adsorption characteristics of activated carbon fibers (ACFs) with improved surface morphologies towards volatile organic compounds (VOCs), a commercial low-grade ACF was surface modified by successive surface treatment (ST) and chemical activation (CA) process. O 3 was used as an ST agent for the formation of oxygen-containing functional groups on the carbon matrix of ACFs. CA was carried out after ST, using a KOH solution. After the successive ST-CA process, Brunauer-Emmett-Teller (BET) surface area and average pore diameter of ACFs were increased from 1483 m 2 /g to 2743 m 2 /g and enlarged from 1.931 nm to 2.512 nm, respectively. The successive ST-CA process also resulted in the adsorption capacities of benzene, toluene, and xylene of the ACFs to increase from 0.22 g −Ben. /g −ACFs , 0.18 g −Tol. /g −ACFs , and 0.19 g −Xyl /g −ACFs up to 0.37 g −Ben. /g −ACFs , 0.35 g −Tol. /g −ACFs , and 0.38 g −Xyl /g −ACFs , respectively.

Keywords: activated carbon fiber; surface treatment; chemical activation; BTX gas adsorption; textural properties; IAQ (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1660-4601/17/15/5422/pdf (application/pdf)
https://www.mdpi.com/1660-4601/17/15/5422/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jijerp:v:17:y:2020:i:15:p:5422-:d:390852

Access Statistics for this article

IJERPH is currently edited by Ms. Jenna Liu

More articles in IJERPH from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().